Double Negative Metamaterial of Copper Split Ring and Graphite Materials

The work of this paper is to design and simulate a novel rectangular split ring and graphite wire structured having simultaneous negative permittivity and permeability so called double negative metamaterial or left handed material. The DNG structure consists of four rectangular split ring resonators on one side of dielectric medium and a couple of graphite wires on other side. The complex permittivity, permeability, impedance and refractive index are determined from simulated Scattering parameters using direct retrieval method. Simulations  of DNG structure are carried out using CST MWS. MATLAB is  used for verification of negative values of structure’s parameter.

Keywords: Double negative left handed material, Negative Permittivity, Negative Permeability, Negative Refractive Index, Negative impedance, Split Ring Resonators.